Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Balance at Jan. 02, 2011	$ 44,907	$ 216	$ 0	$ 3,474	$ 39,823	$ 1,535	$ (141)
Common stock, shares outstanding at Jan. 02, 2011		21,632,402
Stock-based compensation	2,779	0	0	2,779	0	0	0
Exercise of stock options	551	1	0	550	0	0	0
Exercise of stock options, shares		97,376
Vesting of non-vested shares and excess tax benefits	152	1	0	151	0	0	0
Vesting of non-vested shares, shares		20,459
Net income (loss)	11,218	0	0	0	11,218	0	0
Change in valuation of interest rate swap	(68)	0	0	0	0	(68)	0
Change in postretirement benefit obligations	(382)	0	0	0	0	(382)	0
Balance at Jan. 01, 2012	59,157	218	0	6,954	51,041	1,085	(141)
Common stock, shares outstanding at Jan. 01, 2012		21,750,237
Stock-based compensation	2,169	0	0	2,169	0	0	0
Exercise of stock options	295	0	0	295	0	0	0
Exercise of stock options, shares		69,824
Conversion of stock options, shares		666,090
Conversion of stock options	0	7	0	(7)	0	0	0
Vesting of non-vested shares and excess tax benefits	936	2	0	934	0	0	0
Vesting of non-vested shares, shares		262,090
Issuance of preferred stock	57,711	0	0	57,711	0	0	0
Distribution of Fiesta Restaurant Group's net assets	(10,791)	0	0	0	(10,791)	0	0
Net income (loss)	(18,888)	0	0	0	(18,888)	0	0
Change in valuation of interest rate swap	68	0	0	0	0	68	0
Change in postretirement benefit obligations	(484)	0	0	0	0	(484)	0
Balance at Dec. 30, 2012	90,173	227	0	68,056	21,362	669	(141)
Common stock, shares outstanding at Dec. 30, 2012	22,748,241	22,748,241
Stock-based compensation	1,205	0	0	1,205	0	0	0
Vesting of non-vested shares and excess tax benefits	0	3	0	(3)	0	0	0
Vesting of non-vested shares, shares		300,093
Distribution of Fiesta Restaurant Group's net assets	(688)	0	0	0	(688)	0	0
Net income (loss)	(13,519)	0	0	0	(13,519)	0	0
Change in valuation of interest rate swap	0
Change in postretirement benefit obligations	33	0	0	0	0	33	0
Balance at Dec. 29, 2013	$ 77,204	$ 230	$ 0	$ 69,258	$ 7,155	$ 702	$ (141)
Common stock, shares outstanding at Dec. 29, 2013	23,048,334	23,048,334