Investment in Unconsolidated Entity (Details)		5 Months Ended	12 Months Ended
	Aug. 15, 2017 USD ($) officer board_seat $ / shares shares	Dec. 31, 2017 USD ($) $ / shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Board Seats			3
Stock Issued During Period, Shares, Acquisitions | shares			20,000	1,477,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.01		$ 0.01
Equity Method Investments		$ 16,878,000	$ 20,269,000	$ 16,878,000
Asset Impairment Charges				0
Goodwill		0	680,000	0
Income (Loss) from Equity Method Investments			7,259,000	2,746,000	$ 0
Equity Method Investment, Summarized Financial Information, Revenue			166,102,000	58,958,000
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)			17,880,000	13,989,000
Challenger Subsidiary [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Board Seats | board_seat	5
Equity Method Investment Number of Officers | officer	6
Equity Method Investment, Ownership Percentage	49.90%
Ownership Interest by Third Party	50.10%
Stock Issued During Period, Shares, Acquisitions | shares	1,497,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
EquityInterestIssuableinAcquisitionValueAssigned	$ 200,000
BusinessAcquisitionPercentageofOptionalVotingInterestsToAcquire	20.10%
EquityMethodInvestmentAcquisitionCosts	$ 241,000	300,000
Equity Method Investments	15,100,000
Goodwill	$ 5,100,000
EquityMethodInvestmentSummarizedFinancialInformationCash			14,584,000
Equity Method Investment Board Seats Held | board_seat	2
equity method investments, considered transferred	$ 15,061,000
EquityMethodInvestmentSummarizedFinancialInformationAccountsReceivable		1,494,000	1,259,000	1,494,000
EquityMethodInvestmentSummarizedFinancialInformationInventory		57,841,000	44,375,000	57,841,000
EquityMethodInvestmentSummarizedFinancialInformationOtherAssets			3,132,000
Equity Method Investment, Summarized Financial Information, Assets		68,414,000	72,297,000	68,414,000
EquityMethodInvestmentSummarizedFinancialInformationAccountsPayable		5,060,000	2,173,000	5,060,000
EquityMethodInvestmentSummarizedFinancialInformationAccruedExpensesandOtherLiabilities			5,328,000
EquityMethodInvestmentSummarizedFinancialInformationNotesPayable		36,923,000	31,402,000	36,923,000
Equity Method Investment Summarized Financial Information, Equity		11,811,000	17,741,000	11,811,000
Equity Method Investment, Summarized Financial Information, Liabilities and Equity		$ 68,414,000	72,297,000	68,414,000
Equity Method Investment, Summarized Financial Information, Cost of Sales			$ 148,222,000	$ 44,969,000
Common Stock [Member] | Challenger Subsidiary [Member]
Schedule of Equity Method Investments [Line Items]
Stock Issued During Period, Shares, Acquisitions | shares	1,477,000
Share Price | $ / shares	$ 9.90
Stock Issued During Period, Value, Acquisitions	$ 14,622,000
equity method investments, considered transferred	$ 14,863,000
Holdbackshares [Member] | Challenger Subsidiary [Member]
Schedule of Equity Method Investments [Line Items]
Stock Issued During Period, Shares, Acquisitions | shares	20,000
Share Price | $ / shares	$ 9.90
Stock Issued During Period, Value, Acquisitions	$ 198,000