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Long-Term Debt (Details) - USD ($)
9 Months Ended
Aug. 26, 2019
Sep. 30, 2019
Dec. 31, 2018
Nov. 01, 2016
Nov. 11, 2013
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity, Current   $ 100,000,000.0   $ 175,000,000.0 $ 250,000,000.0
Allowable Amount For Issuance of Letters of Credit   $ 30,000,000.0     $ 20,000,000.0
Debt Instrument, Covenant, Leverage Ratio   2      
Debt Covenant, Minimum Net Income Requirement   $ 1.00      
Debt Covenant, Minimum Tangible Net Worth   250,000,000.0      
Noncash or Part Noncash Acquisition, Debt Assumed $ 93,300,000        
Debt, Long-term and Short-term, Combined Amount   53,500,000 $ 0.0    
Letters of Credit Outstanding, Amount   11,300,000      
Line of Credit Facility, Current Borrowing Capacity   $ 88,700,000      
Prime Rate [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Basis Spread on Variable Rate   0.00%      
Minimum [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.0725%      
Long Term Debt, Interest Rate at Period End   3.13%      
Long-term Debt, Term   36 months      
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Basis Spread on Variable Rate   0.70%      
Maximum [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.175%      
Long Term Debt, Interest Rate at Period End   5.17%      
Long-term Debt, Term   84 months      
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Basis Spread on Variable Rate   0.90%      
Accordion Feature [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity, Current   $ 100,000,000.0