Business Acquisition - Purchase Price Consideration and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands		6 Months Ended
	Apr. 03, 2017	Jun. 30, 2017	Dec. 31, 2016
Business Acquisitions
Liabilities incurred		$ 1,818
Assets
Goodwill		$ 29,817	$ 19,285
Savvy
Business Acquisitions
Cash payments to acquire businesses	$ 41,053
Total consideration	42,871
Assets
Receivables and other assets	159
Land and other inventories	39,381
Property, plant and equipment	455
Intangibles	400
Goodwill	10,532
Total assets acquired	50,934
Liabilities
Accounts payable	7,673
Accrued and other liabilities	390
Total liabilities assumed	8,063
Total net assets acquired	42,871
Trade Name | Savvy
Assets
Intangibles	407
Earn-out | Savvy
Business Acquisitions
Liabilities incurred	$ 1,818