Note 13 - Purchase and Sale of Interests in Subsidiaries (Tables)

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information [Table Text Block]

	Revenue		Net Income
Actual Unilink from August 1 to December 31, 2014	$	3,957	$	102
Consolidated supplemental pro forma from January 1 to December 31, 2014	$	127,555	$	3,475
Consolidated supplemental pro forma from January 1 to December 31, 2013	$	119,757	$	3,768