Quarterly report pursuant to Section 13 or 15(d)

Nature Of Operations And Summary Of Significant Accounting Policies (Details)

v3.8.0.1
Nature Of Operations And Summary Of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]      
Contract liabilities $ 85 $ 360  
Revenue recognized from satisfaction of performance obligations 291    
Accounts receivable 36,252   $ 35,817
Accounts receivable,allowance 608   $ 382
ASU 2016-02 [Member]      
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]      
Operating Lease, Liability 2,400    
Trade Accounts Receivable [Member]      
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]      
Accounts receivable 36,342 35,940  
Accounts receivable,allowance $ 608 $ 382