Segment Information (Capital Expenditures, Depreciation and Amortization by Segment) (Details) - USD ($) $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019  | 
Sep. 30, 2018  | 
Sep. 30, 2019  | 
Sep. 30, 2018  | 
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| Segment Reporting Information [Line Items] | ||||
| Capital expenditures | $ 844 | $ 336 | $ 2,838 | $ 1,854 | 
| Depreciation | 1,090 | 1,106 | 3,332 | 3,314 | 
| Amortization | 888 | 965 | 2,665 | 2,902 | 
| Black Diamond [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Capital expenditures | 673 | 279 | 1,863 | 1,495 | 
| Depreciation | 610 | 617 | 1,852 | 1,837 | 
| Amortization | 278 | 272 | 834 | 822 | 
| Sierra [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Capital expenditures | 171 | 57 | 975 | 359 | 
| Depreciation | 480 | 489 | 1,480 | 1,477 | 
| Amortization | $ 610 | $ 693 | $ 1,831 | $ 2,080 | 
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- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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