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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) (USD $)
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Sep. 30, 2013
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Dec. 31, 2012
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|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Property and Equipment, accumulated depreciation | $ 22,206,000 | $ 20,713,000 |
| Acquired Technology, accumulated amortization | 30,091,000 | 21,868,000 |
| Preferred Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Preferred Stock, shares authorized (in shares) | 5,000,000 | 5,000,000 |
| Preferred Stock, shares issued (in shares) | 200,000 | 200,000 |
| Preferred Stock, shares outstanding (in shares) | 200,000 | 200,000 |
| Preferred Stock, liquidation value per share (in dollars per share) | $ 7.50 | $ 7.50 |
| Preferred Stock, liquidation value | $ 1,500,000 | $ 1,500,000 |
| Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common Stock, shares authorized (in shares) | 100,000,000 | 100,000,000 |
| Common Stock, shares issued (in shares) | 46,670,763 | 46,561,437 |
| Treasury Stock, shares | 401,501 | 205,902 |