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v3.19.1

Line of Credit and Long-Term Debt - Additional Information (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) covenant | Dec. 31, 2013 USD ($) | Dec. 31, 2018 USD ($)
Line of Credit Facility [Line Items] |  |  |
RLC outstanding balance | $ 64,908,000 |  | $ 65,915,000
Interest pay rate | 4.11% |  |
Promissory note agreement |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument face amount |  | $ 4,750,000 |
Stated interest rate |  | 4.25% |
Periodic principal and interest payments |  | $ 36,000 |
Long-term debt | $ 3,347,000 |  |
Level 2 | Interest Rate Swap |  |  |
Line of Credit Facility [Line Items] |  |  |
Notional Amount | $ 61,561,000 |  | 62,483,000
Interest pay rate | 4.11% |  |
Term Notes |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit amount | $ 70,000,000 |  |
Term Notes | Selected LIBOR rate |  |  |
Line of Credit Facility [Line Items] |  |  |
Interest rate on line of credit, variable rate | 1.70% |  |
Revolving line of credit |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit amount | $ 30,000,000 |  |
Commitment fee percentage | 0.10% |  |
RLC outstanding balance | $ 0 |  | $ 0
Number of debt covenants | covenant | 3 |  |
Debt equity ratio | 0.75 |  |
Debt service coverage ratio | 1.25 |  |
Minimum liquid assets | $ 20,000,000 |  |
Revolving line of credit | Selected LIBOR rate |  |  |
Line of Credit Facility [Line Items] |  |  |
Interest rate on line of credit, variable rate | 1.50% |  |
Revolving line of credit | LIBOR for a fixed rate term |  |  |
Line of Credit Facility [Line Items] |  |  |
Interest rate on line of credit, variable rate | 1.50% |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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