Goodwill and Other Intangibles - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 37,340	$ 37,340
Accumulated Amortization	(21,240)	(20,330)
Net Book Value	16,100	17,010
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	34,940	34,940
Accumulated Amortization	(19,671)	(18,816)
Net Book Value	15,269	16,124
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	700	700
Accumulated Amortization	(554)	(537)
Net Book Value	146	163
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,700	1,700
Accumulated Amortization	(1,015)	(977)
Net Book Value	$ 685	$ 723