Note 6 - Borrowings (Details) - Consolidated Leverage Ratio | 3 Months Ended |
Mar. 31, 2015 |
Regions Bank and PNC Bank, N.A. [Member] | Minimum [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 1 |
Regions Bank and PNC Bank, N.A. [Member] | Minimum [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 1.5 |
Regions Bank and PNC Bank, N.A. [Member] | Minimum [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 2 |
Regions Bank and PNC Bank, N.A. [Member] | Minimum [Member] | Leverage Ratio 5 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 2.5 |
Regions Bank and PNC Bank, N.A. [Member] | Maximum [Member] | Leverage Ratio 1 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 1 |
Regions Bank and PNC Bank, N.A. [Member] | Maximum [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 1.5 |
Regions Bank and PNC Bank, N.A. [Member] | Maximum [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 2 |
Regions Bank and PNC Bank, N.A. [Member] | Maximum [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 2.5 |
Regions Bank and PNC Bank, N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 1 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.25% |
Regions Bank and PNC Bank, N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.50% |
Regions Bank and PNC Bank, N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.75% |
Regions Bank and PNC Bank, N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 2.00% |
Regions Bank and PNC Bank, N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 5 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 2.25% |
Regions Bank and PNC Bank, N.A. [Member] | Base Rate [Member] | Leverage Ratio 1 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 0.25% |
Regions Bank and PNC Bank, N.A. [Member] | Base Rate [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 0.50% |
Regions Bank and PNC Bank, N.A. [Member] | Base Rate [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 0.75% |
Regions Bank and PNC Bank, N.A. [Member] | Base Rate [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.00% |
Regions Bank and PNC Bank, N.A. [Member] | Base Rate [Member] | Leverage Ratio 5 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.25% |
Minimum [Member] | Leverage Ratio 1 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 3 |
Minimum [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 2 |
Minimum [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 1 |
Maximum [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 3 |
Maximum [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 2 |
Maximum [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Consolidated leverage ratio | 1 |
London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 1 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.70% |
London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.50% |
London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.25% |
London Interbank Offered Rate (LIBOR) [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | 1.00% |
Base Rate [Member] | Leverage Ratio 1 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | -0.55% |
Base Rate [Member] | Leverage Ratio 2 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | -0.70% |
Base Rate [Member] | Leverage Ratio 3 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | -1.00% |
Base Rate [Member] | Leverage Ratio 4 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument rates | -1.00% |