Note 4 - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Customer Relationships [Member] | Minimum [Member]
Useful Life	5 years	5 years
Customer Relationships [Member] | Maximum [Member]
Useful Life	10 years	10 years
Customer Relationships [Member]
Intangible assets, gross	$ 101,806	$ 101,806
Less: Accumulated amortization	(61,087)	(57,497)
Intangible assets, net	40,719	44,309
Total	$ 61,087	$ 57,497
Restrictive Covenant [Member] | Minimum [Member]
Useful Life	3 years	3 years
Restrictive Covenant [Member] | Maximum [Member]
Useful Life	7 years	7 years
Restrictive Covenant [Member]
Intangible assets, gross	$ 16,800	$ 16,800
Less: Accumulated amortization	(14,419)	(13,580)
Intangible assets, net	2,381	3,220
Total	$ 14,419	$ 13,580
Trade Names [Member] | Minimum [Member]
Useful Life	3 years	3 years
Trade Names [Member] | Maximum [Member]
Useful Life	5 years	5 years
Trade Names [Member]
Intangible assets, gross	$ 17,000	$ 17,000
Less: Accumulated amortization	(10,835)	(10,221)
Intangible assets, net	6,165	6,779
Total	10,835	10,221
Intangible assets, gross	135,606	135,606
Less: Accumulated amortization	86,341	81,298
Intangible assets, net	49,265	54,308
Total	$ (86,341)	$ (81,298)