Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current Assets:
Allowance for doubtful accounts	$ 3,388	$ 1,619
Unamortized debt discount, current	3	7
Unamortized debt discount, noncurrent	$ 0	$ 7
Stockholders' Equity:
Preferred stock, par value (per share)	$ 0.1	$ 0.1
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (per share)	$ 0.1	$ 0.1
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	33,416,110	36,232,074
Common stock, shares outstanding	33,416,110	36,191,565
Treasury stock, shares	0	40,509