CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net (loss) income	$ (626)	$ 5,494	$ (1,956)	$ 24,068
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	101	5	(36)	(76)
Comprehensive (loss) income before preferred stock dividends	(525)	5,499	(1,992)	23,992
Dividends on preferred stock	(2,207)	(2,207)	(4,414)	(4,414)
Comprehensive (loss) income available to CAI common stockholders	$ (2,732)	$ 3,292	$ (6,406)	$ 19,578