Quarterly report pursuant to Section 13 or 15(d)

DEBT - Schedule of Debt (Details)

v3.7.0.1
DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Mar. 31, 2017
Debt Instrument [Line Items]    
Unamortized discount and debt issuance costs $ (3,184) $ (3,472)
Long-term debt 126,493  
Long-term debt, net of unamortized discount and debt issuance costs 60,219 65,028
Revolving credit agreement    
Debt Instrument [Line Items]    
Long-term debt 13,403  
Convertible subordinated debt    
Debt Instrument [Line Items]    
4.50% convertible subordinated notes 63,090 63,090
Unamortized discount and debt issuance costs (164) (263)
Convertible subordinated debt, net of unamortized debt issuance costs 62,926 62,827
Credit agreement | Revolving credit agreement | Revolving credit agreement    
Debt Instrument [Line Items]    
Long-term debt 13,403 18,500
Term loan agreement    
Debt Instrument [Line Items]    
Long-term debt $ 50,000 $ 50,000