Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2018
Accounting Policies [Abstract]  
Schedule of Cash, Cash Equivalents and Restricted Cash
Restricted cash is classified within deferred costs and other assets, net in the accompanying consolidated balance sheets. Cash, cash equivalents and restricted cash consisted of the following (in thousands):
 
March 31,
2018
 
December 31,
2017
 
March 31,
2017
Cash and cash equivalents
$
10,989

 
$
8,798

 
$
9,309

Restricted cash:
 
 
 
 
 
Collateral deposits (1)
1,190

 
1,751

 
1,451

Tenant improvements, repairs, and leasing commissions (2)
8,782

 
8,257

 
10,277

Master Trust Release (3)
97,010

 
85,703

 
30,395

Liquidity reserve (4)
5,527

 
5,503

 
—

Other (5)
4,656

 
4,695

 
1,251

Total cash, cash equivalents and restricted cash
$
128,154

 
$
114,707

 
$
52,683

(1) Funds held in lender controlled accounts generally used to meet future debt service or certain property operating expenses.
(2) Deposits held as additional collateral support by lenders to fund improvements, repairs and leasing commissions incurred to secure a new tenant.
(3) Proceeds from the sale of assets pledged as collateral under the Spirit Master Funding Program, which are held on deposit until a qualifying substitution is made or the funds are applied as prepayment of principal.
(4) Liquidity reserve cash was placed on deposit for Master Trust 2014 and is held until there is a cashflow shortfall or upon achieving certain performance criteria, as defined in the agreements governing Master Trust 2014, or a liquidation of Master Trust 2014 occurs.
(5) Funds held in lender controlled accounts released after scheduled debt service requirements are met.