CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Total Merge Shareholders' Equity [Member]	Noncontrolling Interest [Member]	Total
Balance, common stock subscribed at Dec. 31, 2009		$ 32
Balance at Dec. 31, 2009	0	748	524,114	(458,356)	1,599	68,137	0	68,137
Balance, common stock subscribed (in shares) at Dec. 31, 2009		9,978
Balance, common stock issued (in shares) at Dec. 31, 2009		74,791,753
Balance, preferred stock issued (in shares) at Dec. 31, 2009	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock	26,850	75	14,825	0	0	41,750	0	41,750
Issuance of stock (in shares)	41,750	7,515,000
Deemed dividend	14,900	0	(14,900)	0	0	0	0	0
Stock issuance costs	0	0	(882)	0	0	(882)	0	(882)
Stock issued for acquisitions	0	5	1,345	0	0	4,615	0	4,615
Stock issued for acquisitions, common stock issued (in shares)		500,000
Stock issued for acquisitions, common stock subscribed		3,265
Stock issued for acquisitions, common stock subscribed (in shares)		974,701
Stock issued under ESPP	0	1	133	0	0	160	0	160
Stock issued under ESPP, common stock issued (in shares)		51,388
Stock issued under ESPP, common stock subscribed		26
Stock issued under ESPP, common stock subscribed (in shares)		6,374
Vesting of restricted stock	0	4	(4)	0	0	0	0	0
Vesting of restricted stock (in shares)		408,531
Share-based compensation expense	0	0	2,623	0	0	2,623	0	2,623
Treasury stock repurchase and retirement	0	0	(26)	0	0	(26)	0	(26)
Treasury stock repurchase and retirement (in shares)		(8,549)
Net income (loss)	0	0	0	(11,516)	0	(11,516)	0	(11,516)
Other comprehensive income (loss)	0	0	0	0	(55)	(55)	0	(55)
Balance, common stock subscribed at Dec. 31, 2010		3,323
Balance at Dec. 31, 2010	41,750	833	527,228	(469,872)	1,544	104,806	0	104,806
Balance, common stock subscribed (in shares) at Dec. 31, 2010		991,053
Balance, common stock issued (in shares) at Dec. 31, 2010		83,258,123
Balance, preferred stock issued (in shares) at Dec. 31, 2010	41,750
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for acquisitions		68	36,777	0	0	34,802	0	34,802
Stock issued for acquisitions, common stock issued (in shares)								6,843,733
Stock issued for acquisitions, common stock subscribed		(2,043)
Stock issued for acquisitions, common stock subscribed (in shares)		(798,835)
Stock issued under ESPP		0	263	0	0	294	0	294
Stock issued under ESPP, common stock issued (in shares)								56,465
Stock issued under ESPP, common stock subscribed		31
Stock issued under ESPP, common stock subscribed (in shares)		2,898
Exercise of stock options		3	869	0	0	872	0	872
Exercise of stock options, common stock issued (in shares)								295,500
Share-based compensation expense		0	3,908	0	0	3,908	0	3,908
Preferred stock dividends paid		0	(7,328)	0	0	(7,328)	0	(7,328)
Net income (loss)		0	0	(5,521)	0	(5,521)	(10)	(5,531)
Other comprehensive income (loss)		0	0	0	69	69	0	69
Noncontrolling interest acquired		0	0	0	0	0	478	478
Redemption and cancellation of Series A Preferred Stock	(41,750)	0		0	0	(41,750)	0	(41,750)
Redemption and cancellation of Series A Preferred Stock (in shares)	(41,750)
Stock issued for charitable contribution		5	1,846	0	0	1,851	0	1,851
Stock issued for charitable contribution (in shares)								485,232
Balance, common stock subscribed at Dec. 31, 2011		1,311
Balance at Dec. 31, 2011	0	909	563,563	(475,393)	1,613	92,003	468	92,471
Balance, common stock subscribed (in shares) at Dec. 31, 2011		195,116						195,116
Balance, common stock issued (in shares) at Dec. 31, 2011								90,939,053
Balance, preferred stock issued (in shares) at Dec. 31, 2011	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for acquisitions		14	5,561	0	0	5,202	0	5,202
Stock issued for acquisitions, common stock issued (in shares)								1,410,491
Stock issued for acquisitions, common stock subscribed		(373)
Stock issued for acquisitions, common stock subscribed (in shares)		(53,574)
Stock issued under ESPP		1	356	0	0	353	0	353
Stock issued under ESPP, common stock issued (in shares)								92,886
Stock issued under ESPP, common stock subscribed		(4)
Stock issued under ESPP, common stock subscribed (in shares)		16,853
Exercise of stock options		2	686	0	0	688	0	688
Exercise of stock options, common stock issued (in shares)								190,269
Vesting of restricted stock		5	1,822	0	0	1,827	0	1,827
Vesting of restricted stock (in shares)								505,038
Share-based compensation expense		0	5,786	0	0	5,786	0	5,786
Net income (loss)		0	0	(28,802)	0	(28,802)	(18)	(28,820)
Other comprehensive income (loss)		0	0	0	(46)	(46)	0	(46)
Balance, common stock subscribed at Dec. 31, 2012		934
Balance at Dec. 31, 2012	$ 0	$ 931	$ 577,774	$ (504,195)	$ 1,567	$ 77,011	$ 450	$ 77,461
Balance, common stock subscribed (in shares) at Dec. 31, 2012		158,395						158,395
Balance, common stock issued (in shares) at Dec. 31, 2012								93,137,737
Balance, preferred stock issued (in shares) at Dec. 31, 2012	0