Note 13 - Stock-based Compensation and Similar Arrangements - Stock Appreciation Rights, Fair Value Assumptions (Details) - HoldCo LTI Program [Member] - Performance Shares [Member] - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Expected Volatility | 40.00% | 45.00% |
| Dividend Yield | 0.00% | 0.00% |
| Fair Value of Total Pool | $ 12,870 | $ 12,590 |
| Minimum [Member] | ||
| Forward interest rate | 0.24% | 0.04% |
| Maximum [Member] | ||
| Forward interest rate | 2.71% | 2.90% |