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Long-Term Debt (Tables)
 12 Months Ended
Dec. 31, 2016
Long-Term Debt Covenants [Abstract]  
Bank Loans
 
Bank loans
As of December 31, 2016
As of December 31, 2015
Margin
(i)
Issued in March 2007 maturing in December 2019 (the “2007 credit facility”)
185,975
185,975
3.00%
(ii)
 Issued in March 2008 maturing in December 2019  (the “2008 credit facility”)
181,641
181,641
3.00%
(iii)
Issued in June 2011 maturing in March 2018 (the “2011 credit facility”)
14,000
14,000
3.25%
(iv)
Issued in September 2013 maturing in December 2020 (the “2013 credit facility”)
207,646
190,000
3.50%
(v)
Assumed in October 2016 maturing in November 2022 (the “2015 credit facility”)
15,750
-
2.50%
 
Total long-term debt
$605,012
$571,616
 
 
Less: Deferred loan issuance costs
2,825
3,806
 
 
Total long-term debt, net
$602,187
$567,810
 
 
Less: Current portion of long-term debt
40,534
12,957
 
 
Add: Current portion of deferred loan issuance costs
966
1,035
 
 
Long-term debt, net
$562,619
$555,888
 
Required Annual Loan Payments
 
2007 Credit Facility (i)
2008 Credit Facility (ii)
2011 Credit Facility (iii)
2013 Credit Facility (iv)
2015 Credit Facility (v)
Total
2017
$12,975
$9,205
$1,000
$17,354
$-
$40,534
2018
51,900
36,819
13,000
17,354
328
119,401
2019
121,100
135,617
-
17,354
1,313
275,384
2020
-
-
-
155,584
1,313
156,897
2021
-
-
-
-
1,313
1,313
Thereafter
-
-
-
-
11,483
11,483
Total
$185,975
$181,641
$14,000
$207,646
$15,750
$605,012