STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 26, 2018	Dec. 26, 2017	Oct. 22, 2014	Nov. 01, 2007
Equity [Abstract]
Stock repurchase program, authorized amount							$ 50,000,000
Stock repurchase program, additional authorized amount						$ 30,000,000
Repurchased shares (in shares)	0	48,687	105,750
Repurchased shares, value		$ 328,000	$ 729,000
Stock repurchase program, average cost		$ 6.73	$ 6.90
Stock repurchase program, remaining authorized repurchase amount	$ 33,400,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001			$ 0.001
Class of Stock [Line Items]
Right, outstanding (in shares)				0
Series B Junior Participating Preferred Stock
Class of Stock [Line Items]
Right, number of shares (in shares)					0.001
Right, exercise price (in dollars per share)					$ 30.00