Income Taxes - Schedule of Earnings Before Incomes Taxes, Income Tax Expense and Effective Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Earnings before income taxes	$ 14,913	$ 7,911	$ 29,064	$ 17,614
Income tax expense	$ 3,555	$ 1,757	$ 6,882	$ 3,914
Effective income tax rate	23.80%	22.20%	23.70%	22.20%