Accumulated Other Comprehensive Loss (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 21,387,000	$ 35,827,000	$ 30,096,000
Ending balance	18,064,000	21,387,000	35,827,000
Amounts reclassified from accumulated other comprehensive income	0	0	0
AOCI
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(3,908,000)	(2,602,000)	(374,000)
Ending balance	(3,787,000)	(3,908,000)	(2,602,000)
Foregin Currency Translation
Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive income (loss) due to foreign currency translation, net of tax	$ 121,000	$ (1,306,000)	$ (2,228,000)