Annual report pursuant to Section 13 and 15(d)

Valuation And Qualifying Accounts (Details)

v3.8.0.1
Valuation And Qualifying Accounts (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]        
Balance Beginning of Year $ 2,390 $ 2,989 $ 1,307 $ 1,983
Bad debt expense (income) $ (175) 2,774 842 842
Deductions   (424) (1,092) (994)
Valuation Allowances and Reserves, Reserves of Businesses Acquired   0 0 (524)
Balance End of Year   $ 2,390 $ 2,989 $ 1,307