Note 12 - Leases and Commitments (Tables)

3 Months Ended

Mar. 31, 2014

Leases [Abstract]

Schedule of Capital Leased Assets [Table Text Block]

	(in thousands)
	Capitalized Costs		Accumulated Amortization		Net Book Value
March 31, 2014	$	78,197	$	20,661	$	57,536
December 31, 2013		84,410		20,942		63,468

Condensed Cash Flow Statement [Table Text Block]

	(in thousands)
	Three Months Ended March 31,
	2014		2013
Amortization of leased assets	$	3,431	$	2,851
Rent expense under operating leases		1,275		912

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

	(in thousands)
	2014		2015		2016		2017		2018		Thereafter
Future minimum payments	$	21,392	$	19,949	$	16,228	$	1,089	$	1,915	$	--
Future rentals under operating leases		993		358		288		240		85		168