CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS
Accounts and other receivables, allowance for doubtful accounts and commission adjustments	$ 3,798	$ 3,863
PROPERTY AND EQUIPMENT, accumulated depreciation	$ 2,963	$ 2,976
STOCKHOLDERS' EQUITY
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	170,169,440	168,749,889
Common stock, shares outstanding (in shares)	159,861,353	158,441,802
Treasury stock, at cost (in shares)	10,308,087	10,308,087