Investment in Unconsolidated Entities (Summary of Financial Information of Investment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Company’s share in net earnings of unconsolidated entities	$ 2,565	$ 1,846
Assets	975,180		$ 875,539
Liabilities	409,886		325,533
Stockholders' Equity Attributable to Parent	542,982	480,869	523,168	$ 468,351
Stockholders' Equity Attributable to Noncontrolling Interest	10,900	4,788	13,227	17,281
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	553,882	485,657	536,395	485,632
Liabilities and Equity	975,180		875,539
Total revenues	213,267	168,628
Net income	16,716	11,491
Cash		23,873		38,315
Schedule of Equity Method Investments [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest	10,900	4,788	13,227	17,281
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	553,882	485,657	536,395	485,632
Total revenues	213,267	168,628
Net income	16,716	11,491
Equity in income of unconsolidated entities	2,565	1,846
Assets	975,180		875,539
Cash		23,873		38,315
Liabilities	409,886		325,533
Stockholders' Equity Attributable to Parent	542,982	480,869	523,168	$ 468,351
Liabilities and Equity	975,180		875,539
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Income Statement [Abstract]
Company’s share in net earnings of unconsolidated entities	2,565	1,846
Assets	125,680		121,674
Liabilities	71,351		67,733
Stockholders' Equity Attributable to Parent	27,020		25,910
Stockholders' Equity Attributable to Noncontrolling Interest	27,309		28,031
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	54,329		53,941
Liabilities and Equity	125,680		121,674
Total revenues	35,365	31,097
Net income	5,550	3,780
Cash	10,996		11,699
Schedule of Equity Method Investments [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest	27,309		28,031
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	54,329		53,941
Total revenues	35,365	31,097
Net income	5,550	3,780
Equity in income of unconsolidated entities	2,565	1,846
Accounts and Other Receivables, Net, Current	1,341		3,252
Financing Receivable, after Allowance for Credit Loss	7,342		5,864
Financing Receivable, Held-for-Sale	18,580		23,143
Inventory, Net	82,371		73,704
Other Assets, Current	5,050		4,012
Accounts Payable, Current	6,368		1,726
Accrued Liabilities, Current	7,294		7,784
Notes Payable, Current	57,689		58,223
Costs and Expenses	29,815	$ 27,317
Assets	125,680		121,674
Cash	10,996		11,699
Liabilities	71,351		67,733
Stockholders' Equity Attributable to Parent	27,020		25,910
Liabilities and Equity	$ 125,680		$ 121,674