Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plan (Narrative) (Details)

Stock-Based Compensation Plan (Narrative) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Jan. 17, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 15, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares of common stock that may be granted through awards to any employee in any calendar year		500
Number of shares authorized under the plan		5,732
Annual automatic increase in shares authorized under the plan, percentage		4.00%
Number of stock options issued under a plan		628
Stock options granted fair value		$ 2,303	$ 3,011	$ 987
Common stock awarded		3
Share Price		$ 7.85			$ 8.01
Fair value of the restricted stock awards granted		936		1,567
Unvested stock options		944
Unrecognized compensation cost related to unvested stock options		2,843
Unvested restricted stock awards		340
Stock based compensation expense		3,010	1,766	3,091
Unrecognized compensation cost related to unvested restricted stock awards		854
Restricted stock awards granted in period	250	90
Restricted stock award term		7 years
Threshold share price period for vesting condition		20 days
Threshold share price		$ 14.00
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense		221
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense		$ 2,789
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options issued under a plan				233
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock awards		340	750
Stock Option One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options issued under a plan		143	270
Minimum [Member] \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Minimum [Member] \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		2 years
Minimum [Member] \| Stock Option One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year	1 year
Maximum [Member] \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				5 years
Maximum [Member] \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Maximum [Member] \| Stock Option One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years	5 years
Installment Schedule One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock options		5
Installment Schedule Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested options that will vest in consequent years		98
Restricted Stock Vesting Schedule One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock awards		18
Vest In Four Equal Consecutive Quarterly Tranches From The Date Of Grant \| Stock Option One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock options		40
Vesting On March 31, 2015 [Member] \| Installment Schedule One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock options		2
Vesting On December 31, 2014 [Member] \| Installment Schedule Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting, first installment		14
Vesting On December 31, 2015 [Member] \| Installment Schedule Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting, second installment		27
Vesting On December 31, 2016 [Member] \| Installment Schedule Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting, third installment		31
Vesting On December 31, 2017 [Member] \| Installment Schedule Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting, forth installment		19
Vesting on December 31, 2018 [Member] \| Installment Schedule Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting, fifth installment		7
Vesting Immediately [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options issued under a plan		485
Vesting Contingent On Service Conditions And Sales Targets [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted in period		72