CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 78,596	$ 72,060	$ 6,034
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(391)	2,010	(815)
Comprehensive income before preferred stock dividends	78,205	74,070	5,219
Dividends on preferred stock	5,124
Comprehensive income attributable to non-controlling interest			37
Comprehensive income attributable to CAI common stockholders	$ 73,081	$ 74,070	$ 5,182