Business Overview and Summary of Significant Accounting Policies - Lease Maturity (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Operating Leases
2019	$ 696	$ 696
2020	2,854	2,854
2021	2,646	2,646
2022	1,371	1,371
2023	1,097	1,097
Thereafter	602	602
Total operating lease payment	9,266	9,266
Less imputed interest	(1,391)	(1,391)
Total operating lease liabilities	7,875	7,875
Cash paid for amounts included in the measurement of lease liabilities	514	1,448
Financing Leases
2019	740	740
2020	2,332	2,332
2021	1,716	1,716
2022	1,238	1,238
2023	178	178
Total financing lease payment	6,204	6,204
Less imputed interest	(570)	(570)
Total financing lease liabilities	$ 5,634	$ 5,634