CAPITAL STOCK, Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	2,978,714
Stock Option Activity [Roll Forward]
Cash received from the exercise of stock options		$ 5,600
Employee Stock Option [Member]
Stock Option Activity [Roll Forward]
Options outstanding at beginning of period (in shares)	2,290,017
Granted (in shares)	0
Exercised (in shares)	0
Forfeited or canceled (in shares)	(1,398,125)
Options outstanding at end of period (in shares)	891,892
Options vested at end of period or expected to vest (in shares)	891,892
Options exercisable at end of period (in shares)	891,892
Weighted-average exercise price, options outstanding at beginning of period (in dollars per share)	$ 9.65
Weighted-average exercise price, options granted (in dollars per share)	0.00
Weighted-average exercise price, options exercised (in dollars per share)	0.00
Weighted-average exercise price, options forfeited or canceled (in dollars per share)	10.42
Weighted-average exercise price, options outstanding at end of period (in dollars per share)	8.46
Weighted-average exercise price, options vested at December 31, 2016 or expected to vest (in dollars per share)	8.46
Weighted-average exercise price, options exercisable at December 31, 2016 (in dollars per share)	$ 8.46
Weighted-average remaining contractual term of options outstanding (in years)	1 year 199 days
Weighted-average remaining contractual term of options vested or expected to vest (in years)	1 year 199 days
Weighted-average remaining contractual term of options exercisable (in years)	1 year 199 days
Aggregate intrinsic value options outstanding	$ 0
Aggregate intrinsic value options vested or expected to vest	0
Aggregate intrinsic value options exercisable	$ 0
Employee Stock Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	7 years
Employee Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Non-employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year