Leases (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2015 USD ($) leased_locations	Dec. 31, 2014 USD ($)
Operating Leased Assets [Line Items]
Liability for Exit Costs on Leases		$ 300,000
Operating Leases, Rent Expense, Net	$ 6,000,000	6,200,000	$ 5,900,000
Future Lease Obligations Required
2016		3,618,000
2017		2,982,000
2018		2,347,000
2019		1,925,000
2020		1,187,000
Thereafter		445,000
Operating Leases, Future Minimum Payments Due		12,504,000
Corporate Office [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Monthly Lease Payments		42,511
Corporate Office [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Monthly Lease Payments		$ 50,246
Other Noncancelable [Member]
Operating Leased Assets [Line Items]
Operating Lease, Number of Leased Locations | leased_locations		43
Lease Agreements [Member]
Operating Leased Assets [Line Items]
Business Exit Costs		$ 500,000