Income Taxes - Reconciliation of US Federal Statutory Tax Rates (Details)	12 Months Ended
	Dec. 31, 2019
Reconciliation of the US federal statutory tax rates and the effective tax rates
Statutory federal income tax provision	21.00%
State taxes, net of federal income tax effect	2.60%
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	(8.80%)
Goodwill impairment expense	(3.90%)
Nondeductible merger expenses	(3.30%)
Valuation allowance	(0.70%)
Other	1.30%
Effective Income Tax Rate Reconciliation, Percent, Total	8.20%