Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands |
Mar. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Allowance for doubtful accounts | $ 374 | $ 364 |
| Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |
| Common stock, shares authorized | 250,000,000 | 250,000,000 |
| Common stock, shares issued | 44,923,949 | 44,923,949 |
| Common stock, shares outstanding | 44,623,949 | 44,623,949 |
| Treasury Stock, at cost (300,000 shares) | 300,000 | 300,000 |