CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares shares in Thousands	Mar. 31, 2016	Dec. 31, 2015
Stockholders' equity:
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, authorized	20,000	20,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$ 0.0013	$ 0.0013
Common stock, authorized	160,000	160,000
Common stock, issued	70,146	70,146
Common stock, shares outstanding (in shares)	69,946	69,946
Treasury stock, shares	200	200