The amount, before debt issuance costs, as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

No definition available.

Notes Payable and Unsecured Credit Facility (Narrative) (Details) $ in Thousands		6 Months Ended
	Mar. 30, 2016 USD ($) loan	Jun. 30, 2016 USD ($) loan interest_rate_swap_agreements	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Payments on notes payable		$ 37,353	$ 5,389
Extinguishment of debt, loss on hedged debt obligation		728
Proceeds from credit facility		135,000	$ 160,000
Credit facility, outstanding principal balance		428,000		$ 293,000
Credit facility, total unencumbered pool availability		494,475
Credit facility, amount remaining to be drawn		$ 66,475
Term Loan [Member]
Debt Instrument [Line Items]
Number of interest rate swap agreements \| interest_rate_swap_agreements		5
Unsecured credit facility, swap agreement amount		$ 155,000
Credit facility, outstanding principal balance		210,000		210,000
Note Payable One [Member]
Debt Instrument [Line Items]
Number of notes payable paid off \| loan	1
Payments on notes payable	$ 31,167
Notes payable, fixed interest rate through interest rate swap agreement	6.19%
Notes payable, maturity date	Feb. 25, 2019
Extinguishment of debt, write-off of unamortized deferred financing costs		343
Extinguishment of debt, termination fees		62
Extinguishment of debt, loss on hedged debt obligation		728
Variable Rate Debt, Subject To Interest Rate Swap [Member]
Debt Instrument [Line Items]
Credit facility, outstanding principal balance		$ 210,000		$ 55,000
Number of notes payable \| loan		6
Variable Rate Debt, Subject To Interest Rate Swap [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, outstanding principal balance		$ 210,000