Note 12 - Condensed Consolidating Financial Statements (Details) - Condensed Consolidating Statements of Comprehensive Income (Loss) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Condensed Statement of Income Captions [Line Items]        
Net income (loss) $ 1,859 $ 4,929 $ 4,685 $ 8,446
Other comprehensive (loss):        
Foreign currency translation 137 415 (747) (44)
Comprehensive income (loss) 1,996 5,344 3,938 8,402
Comprehensive income (loss) attributable to non-controlling interests (77) 1,456 (367) 2,152
Comprehensive income (loss) attributable to controlling interests 2,073 3,888 4,305 6,250
Consolidation, Eliminations [Member]        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) (2,665) (5,101) (5,755) (8,999)
Other comprehensive (loss):        
Foreign currency translation 37 131 (256) (13)
Comprehensive income (loss) (2,628) (4,970) (6,011) (9,012)
Comprehensive income (loss) attributable to non-controlling interests (18) 207 (442) 130
Comprehensive income (loss) attributable to controlling interests (2,610) (5,177) (5,569) (9,142)
Parent Company [Member] | Reportable Legal Entities [Member]        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) 2,098 4,839 4,826 8,112
Other comprehensive (loss):        
Foreign currency translation 0 0 0 0
Comprehensive income (loss) 2,098 4,839 4,826 8,112
Comprehensive income (loss) attributable to non-controlling interests 0 1,111 145 1,861
Comprehensive income (loss) attributable to controlling interests 2,098 3,728 4,681 6,251
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) 2,606 5,239 5,685 9,160
Other comprehensive (loss):        
Foreign currency translation 0 0 0 0
Comprehensive income (loss) 2,606 5,239 5,685 9,160
Comprehensive income (loss) attributable to non-controlling interests (59) 138 (70) 161
Comprehensive income (loss) attributable to controlling interests 2,665 5,101 5,755 8,999
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) (180) (48) (71) 173
Other comprehensive (loss):        
Foreign currency translation 100 284 (491) (31)
Comprehensive income (loss) (80) 236 (562) 142
Comprehensive income (loss) attributable to non-controlling interests 0 0 0 0
Comprehensive income (loss) attributable to controlling interests $ (80) $ 236 $ (562) $ 142