Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Narrative)(Details)

v3.8.0.1
Long-Term Debt (Narrative)(Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Credit facility maximum borrowing capacity $ 25,000
Long-term debt $ 0
Credit facility maturity date Oct. 30, 2020
Line of Credit Facility Additional Borrowing Capacity $ 25,000
Revolving Credit Facility [Member]  
Letters of credit borrowing capacity $ 5,000
Debt Instrument, Effective Period 10 days
Line of credit facility, covenant lease adjusted leverage ratio 3.50
Revolving Credit Facility [Member] | Federal Funds Rate [Member]  
Basis spread on variable rate 0.50%
Revolving Credit Facility [Member] | Base Rate [Member]  
Basis spread on variable rate 1.00%