Line of Credit and Long-term Debt - Outstanding Indebtedness and Respective Principal Maturities (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Maturities of Long-term Debt [Abstract]
2019	$ 4,018
2020	4,183
2021	4,366
2022	4,549
2023	4,772
Thereafter	44,027
Total	65,915
Term Loan
Maturities of Long-term Debt [Abstract]
2019	3,715
2020	3,881
2021	4,051
2022	4,221
2023	4,429
Thereafter	42,186
Total	62,483
Promissory note
Maturities of Long-term Debt [Abstract]
2019	289
2020	302
2021	315
2022	328
2023	343
Thereafter	1,841
Total	3,418
Other borrowings
Maturities of Long-term Debt [Abstract]
2019	14
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total	$ 14

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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)(3)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
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