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v3.19.1

Long-Term Debt (Narrative) (Details) |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 24, 2018 USD ($) | May 31, 2018 USD ($) | Nov. 30, 2016 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Mar. 19, 2014
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Repayments of Long-term Lines of Credit |  |  |  | $ 16,200,000 | $ 11,500,000 |  |
Revolving credit facility present accordion provisions |  |  |  | 75,000,000 |  |  |
Carrying value of the liability component |  |  |  | 319,261,000 |  | $ 319,108,000 |
Deferred payments |  |  | $ 2,000,000 |  |  |  |
Accumulated Amortization, Debt Issuance Costs |  |  |  | 162,000 |  | 109,000 |
Amortization of Debt Issuance Costs |  |  |  | $ 94,000 | 208,000 |  |
Ratio Actual [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Ratio of indebtedness to net capital (in Ratio) (below at March 31, 2015) |  |  |  | 5.19 |  |  |
Ratio of earnings to fixed cost obligations (in Ratio) |  |  |  | 1.83 |  |  |
Term Loan [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  |  |  | $ 150,000,000 |  |  |
Convertible Subordinated Notes [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Carrying value of the liability component | $ 6,346,000 |  |  | 5,796,000 |  | 5,732,000 |
Accumulated Amortization, Debt Issuance Costs |  |  |  | 112,000 |  | 106,000 |
Amortization of Debt Issuance Costs |  |  |  | $ 6,000 | 132,000 |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed | 78.00% |  |  |  |  |  |
Stated interest rate percentage |  |  |  | 2.75% |  |  | 2.75%
Interest Expense, Debt |  |  |  | $ 0 | 988,000 |  |
Senior Notes [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Repayments of Long-term Lines of Credit |  | $ 291,400,000 |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  | 1,400,000 |  |  |
Accumulated Amortization, Debt Issuance Costs |  |  |  | 111,000 |  | 77,000 |
Amortization of Debt Issuance Costs |  |  |  | $ 34,000 |  |  |
Stated interest rate percentage |  |  |  | 6.625% |  |  |
Interest Expense, Debt |  |  |  | $ 5,400,000 |  |  |
Credit Agreement [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Amortization of Debt Issuance Costs |  |  |  |  | $ 100,000 |  |
Credit Agreement [Member] | Term Loan [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.125% |  |  |
Prime Rate Option [Member] | Line of Credit [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.00% |  |  |
Libor Margin Option [Member] | Line of Credit [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.00% |  |  |
Series of Individually Immaterial Business Acquisitions [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Interest Expense, Debt |  |  |  | $ 200,000 |  |  |
Revolving Credit Facility, Secured, Floating Rate [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Weighted average interest rate |  |  |  | 4.10% | 3.90% |  |
Revolving Credit Facility, Secured, Floating Rate [Member] | Line of Credit [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Carrying value of the liability component |  |  |  | $ 21,000,000 |  |  |
Revolving Credit Facility [Member] | Credit Agreement 2018 [Member] |  |  |  |  |  |  |
Debt Covenant To Actual Ratios [Line Items] |  |  |  |  |  |  |
Carrying value of the liability component |  |  |  |  |  | $ 27,100,000 |
Amortization of Debt Issuance Costs |  |  |  | $ 100,000 |  |  |

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