Note 10 - Long-term Obligations - Summary of Long-term Obligations (Details) (Parentheticals) - USD ($)
$ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Credit Facility, Second Amendment, Term Loan Tranche [Member] |
|
|
| Face amount |
$ 250
|
$ 250
|
| Term Loan [Member] |
|
|
| Face amount |
$ 60
|
$ 60
|
| Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Credit Facility, Second Amendment, Term Loan Tranche [Member] |
|
|
| Basis spread on variable rate |
2.25%
|
2.25%
|
| Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan [Member] |
|
|
| Basis spread on variable rate |
2.25%
|
2.25%
|
| Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Credit Facility, Second Amendment, Term Loan Tranche [Member] |
|
|
| Basis spread on variable rate |
3.25%
|
3.25%
|
| Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan [Member] |
|
|
| Basis spread on variable rate |
3.25%
|
3.25%
|
| Revolving Credit Facility [Member] |
|
|
| Face amount |
$ 200
|
$ 200
|
| Revolving Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
|
| Basis spread on variable rate |
2.25%
|
2.25%
|
| Revolving Credit Facility [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
|
| Basis spread on variable rate |
3.25%
|
3.25%
|