CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Stockholders' Equity Attributable to Lannett Co., Inc.	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (loss)	Treasury Stock	Noncontrolling Interest
Balance at Jun. 30, 2010	$ 88,959	$ 88,847	$ 25	$ 79,863	$ 9,565	$ 45	$ (651)	$ 112
Balance (in shares) at Jun. 30, 2010			24,882
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans	501	501		501
Shares issued in connection with share-based compensation plans (in shares)			272
Share-based compensation	1,824	1,824		1,824
Shares issued in connection with public stock offering	14,950	14,950	3	14,947
Shares issued in connection with public stock offering (in shares)			3,250
Tax benefit on stock options exercised	(53)	(53)		(53)
Purchase of treasury stock	(221)	(221)					(221)
Distribution to noncontrolling interests	(10)							(10)
Other comprehensive income (loss), net of income tax	(21)	(21)				(21)
Net income (loss)	(240)	(277)			(277)			37
Balance at Jun. 30, 2011	105,689	105,550	28	97,082	9,288	24	(872)	139
Balance (in shares) at Jun. 30, 2011			28,404
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans	272	272	1	271
Shares issued in connection with share-based compensation plans (in shares)			190
Share-based compensation	2,162	2,162		2,162
Purchase of treasury stock	(722)	(722)					(722)
Distribution to noncontrolling interests	(19)							(19)
Other comprehensive income (loss), net of income tax	(87)	(87)				(87)
Net income (loss)	4,018	3,948			3,948			70
Balance at Jun. 30, 2012	111,313	111,123	29	99,515	13,236	(63)	(1,594)	190
Balance (in shares) at Jun. 30, 2012			28,594
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans	3,083	3,083		3,083
Shares issued in connection with share-based compensation plans (in shares)			691
Share-based compensation	1,477	1,477		1,477
Purchase of treasury stock	(440)	(440)					(440)
Distribution to noncontrolling interests	(22)							(22)
Other comprehensive income (loss), net of income tax	16	16				16
Net income (loss)	13,382	13,317			13,317			65
Balance at Jun. 30, 2013	$ 128,809	$ 128,576	$ 29	$ 104,075	$ 26,553	$ (47)	$ (2,034)	$ 233
Balance (in shares) at Jun. 30, 2013			29,285