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Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Goodwill [Roll Forward] |  |
Beginning Balance | $ 56,135 | $ 57,976
Sale of assets of a business |  | (2,639)
Currency effects | (648) | 798
Goodwill acquired during the year | 2,845 |
Ending Balance | 58,332 | 56,135
Goodwill impairment | (1,016) | (1,016)
U.S. Regions |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 24,759 | 24,759
Sale of assets of a business |  | 0
Goodwill acquired during the year | 1,611 |
Ending Balance | 26,370 | 24,759
Goodwill impairment | 0 | 0
U.S. Federal |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 3,375 | 3,375
Sale of assets of a business |  | 0
Goodwill acquired during the year | 1,234 |
Ending Balance | 4,609 | 3,375
Goodwill impairment | 0 | 0
Canada |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 3,494 | 3,262
Sale of assets of a business |  | 0
Currency effects | (277) | 232
Goodwill acquired during the year | 0 |
Ending Balance | 3,217 | 3,494
Goodwill impairment | (1,016) | (1,016)
Other |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 24,507 | 26,580
Sale of assets of a business |  | (2,639)
Currency effects | (371) | 566
Goodwill acquired during the year | 0 |
Ending Balance | 24,136 | 24,507
Goodwill impairment | $ 0 | $ 0

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