CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balances at Dec. 31, 2010	$ 8,606,000	$ 4,703,000	$ 0	$ 6,262,000	$ 19,571,000	$ 3,473,000	$ 23,044,000
Balances (in shares) at Dec. 31, 2010	4,597,000
Stock based compensation expense	0	125,000	0	0	125,000	0	125,000
Stock based compensation expense (in shares)	14,000
Investment in subsidiaries by non-controlling interests	0	0	0	0	0	1,509,000	1,509,000
Cash distributions to non-controlling interests	0	0	0	0	0	(996,000)	(996,000)
Net income	0	0	0	506,000	506,000	983,000	1,489,000
Balances at Dec. 31, 2011	8,606,000	4,828,000	0	6,768,000	20,202,000	4,969,000	25,171,000
Balances (in shares) at Dec. 31, 2011	4,611,000
Repurchase of common stock	(28,000)	0	0	0	(28,000)	0	(28,000)
Repurchase of common stock (in shares)	(9,000)
Stock based compensation expense	0	74,000	0	0	74,000	0	74,000
Stock based compensation expense (in shares)	4,000
Investment in subsidiaries by non-controlling interests	0	0	0	0	0	217,000	217,000
Cumulative translation adjustment	0	0	(357,000)	0	(357,000)	(280,000)	(637,000)
Cash distributions to non-controlling interests	0	0	0	0	0	(780,000)	(780,000)
Net income	0	0	0	38,000	38,000	775,000	813,000
Balances at Dec. 31, 2012	8,578,000	4,902,000	(357,000)	6,806,000	19,929,000	4,901,000	24,830,000
Balances (in shares) at Dec. 31, 2012	4,606,000
Stock based compensation expense	0	37,000	0	0	37,000	0	37,000
Stock based compensation expense (in shares)	0
Investment in subsidiaries by non-controlling interests	0	0	0	0	0	14,000	14,000
Cumulative translation adjustment	0	0	8,000	0	8,000	14,000	22,000
Cash distributions to non-controlling interests	0	0	0	0	0	(291,000)	(291,000)
Net income	0	0	0	25,000	25,000	208,000	233,000
Balances at Mar. 31, 2013	$ 8,578,000	$ 4,939,000	$ (349,000)	$ 6,831,000	$ 19,999,000	$ 4,846,000	$ 24,845,000
Balances (in shares) at Mar. 31, 2013	4,606,000