CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 72,060	$ 6,034	$ 26,735
Other comprehensive income, net of tax:
Foreign currency translation adjustments	2,010	(815)	(2,245)
Comprehensive income	74,070	5,219	24,490
Comprehensive income attributable to non-controlling interest		37	134
Comprehensive income attributable to CAI common stockholders	$ 74,070	$ 5,182	$ 24,356