Note 11 - Borrowings (Details) - Leverage Ratio
|
12 Months Ended |
Dec. 31, 2015 |
|---|
| Leverage Ratio 1 [Member] |
|
| Debt Instrument [Line Items] |
|
| Commitment fee |
0.15%
|
| Leverage Ratio 1 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
1.25%
|
| Leverage Ratio 1 [Member] | Base Rate [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
0.25%
|
| Leverage Ratio 2 [Member] |
|
| Debt Instrument [Line Items] |
|
| Commitment fee |
0.20%
|
| Leverage Ratio 2 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
1.50%
|
| Leverage Ratio 2 [Member] | Base Rate [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
0.50%
|
| Leverage Ratio 3 [Member] |
|
| Debt Instrument [Line Items] |
|
| Commitment fee |
0.25%
|
| Leverage Ratio 3 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
1.75%
|
| Leverage Ratio 3 [Member] | Base Rate [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
0.75%
|
| Leverage Ratio 4 [Member] |
|
| Debt Instrument [Line Items] |
|
| Commitment fee |
0.30%
|
| Leverage Ratio 4 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
2.00%
|
| Leverage Ratio 4 [Member] | Base Rate [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
1.00%
|
| Leverage Ratio 5 [Member] |
|
| Debt Instrument [Line Items] |
|
| Commitment fee |
0.35%
|
| Leverage Ratio 5 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
2.25%
|
| Leverage Ratio 5 [Member] | Base Rate [Member] |
|
| Debt Instrument [Line Items] |
|
| Spread of variable rate |
1.25%
|
| Minimum [Member] | Leverage Ratio 2 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
1.00
|
| Minimum [Member] | Leverage Ratio 3 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
1.50
|
| Minimum [Member] | Leverage Ratio 4 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
2.00
|
| Minimum [Member] | Leverage Ratio 5 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
2.50
|
| Maximum [Member] | Leverage Ratio 1 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
1.00
|
| Maximum [Member] | Leverage Ratio 2 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
1.50
|
| Maximum [Member] | Leverage Ratio 3 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
2.00
|
| Maximum [Member] | Leverage Ratio 4 [Member] |
|
| Debt Instrument [Line Items] |
|
| Leverage ratio |
2.50
|