Quarterly report pursuant to Section 13 or 15(d)

GUARANTORS OF SECURITIES (Condensed Balance Sheet) (Phantom) (Details)

v3.7.0.1
GUARANTORS OF SECURITIES (Condensed Balance Sheet) (Phantom) (Details) - USD ($)
$ / shares in Units, $ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Guarantees [Abstract]    
Allowance for doubtful accounts, trade receivables $ 1,249 $ 1,219
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 60,000,000 60,000,000
Common stock, shares outstanding (in shares) 21,279,467 20,936,636
Treasury shares (in shares) 179,730 175,350