Note 7 - Long-term Obligations - Summary of Long-term Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Capital leases and other long-term obligations	$ 180,172	$ 185,989
Less current portion	(6,841)	(17,030)
Long-term obligations, net of current portion	173,331	168,959
The 2017 Senior Credit Facility [Member]
Long-term obligations	175,050	178,350
Debt discount	(2,345)	(2,668)
Debt issuance costs	(2,525)	(2,869)
The 2017 Senior Credit Facility [Member] \| Revolving Credit Facility [Member]
Revolving credit facility loan	7,000
6.25% Convertible Notes Due 2018 [Member]
Debt discount		(18)
Debt issuance costs		(4)
Convertible notes		10,044
Capital leases and other long-term obligations	$ 2,992	$ 3,154

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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