Long-term debt

The long-term debt of the Company is summarized below:



In thousands of dollars	Mar. 31, 2013		Dec. 30, 2012
Borrowings under revolving credit agreements expiring September 2014	$	220,000	$	205,000
Unsecured notes bearing fixed rate interest at 8.75% due November 2014	248,578		248,376
Unsecured notes bearing fixed rate interest at 10% due June 2015	61,743		61,286
Unsecured notes bearing fixed rate interest at 6.375% due September 2015	248,626		248,497
Unsecured notes bearing fixed rate interest at 10% due April 2016	175,378		174,241
Unsecured notes bearing fixed rate interest at 9.375% due November 2017 (a)	247,647		247,547
Unsecured notes bearing fixed rate interest at 7.125% due September 2018	247,254		247,153
Total long-term debt	$	1,449,226	$	1,432,100

(a) Callable commencing on November 15, 2013 at 104.688% of the principal amount.

For the first three months of 2013, the Company’s long-term debt increased by $17.1 million reflecting $15.0 million borrowed under the revolving credit agreements and debt discount amortization.

On March 31, 2013, the Company had unused borrowing capacity of $887 million under its revolving credit agreements. In addition, its revolving credit agreements currently allow the Company to borrow at least $1.25 billion of additional unsecured debt on an unrestricted basis guaranteed by the guarantor subsidiaries under these credit agreements. This borrowing limit is subject to increases or decreases depending upon the Company’s total leverage ratio.