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Summary of Unaudited Quarterly Financial Information (Tables)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]  
Restatement to Previously Reported Income
The restated amounts are set forth in the following tables (in thousands, except share data):
 
Three months ended,
 
Nine months ended,
 
September 30, 2015
 
September 30, 2015
 
Previously Reported
 
Restated
 
Previously Reported
 
Restated
Income tax benefit
$
217,255

 
$
219,362

 
$
216,976

 
$
219,083

Net income
224,539

 
226,646

 
248,857

 
250,964

Basic net income per share
$
11.29

 
$
11.40

 
$
12.61

 
$
12.71

Diluted net income per share
$
10.46

 
$
10.56

 
$
11.78

 
$
11.88
Restatement of Previously Reported Balance Sheet Information
 
As of September 30, 2015
 
Previously Reported
 
Restated
Long-term deferred tax assets
$
206,423

 
$
208,530

Accumulated deficit
(410,458
)
 
(408,351
)
Schedule of Quarterly Financial Information
The following is a summary of the unaudited quarterly results of operations for the years ended December 31, 2015 and 2014 (in thousands).
 
 
Quarter ended
 
March 31
 
June 30
 
September 30 (1)
 
December 31
2015
 
 
 
 
 
 
 
Total revenues
$
14,602

 
$
18,418

 
$
17,701

 
$
21,193

Total operating costs and expenses
11,253

 
14,053

 
9,104

 
10,175

Income tax (expense) benefit
(15
)
 
(265
)
 
219,362

 
514

Income from continuing operations
(89
)
 
22,027

 
226,646

 
6,341

Net loss attributable to noncontrolling interests
(843
)
 
(1,537
)
 
—

 
—

Net income
754

 
23,564

 
226,646

 
6,341

Basic per share amounts:
 
 
 
 
 
 
 
Net income
$
0.04

 
$
1.19

 
$
11.40

 
$
0.32

Diluted per share amounts:
 
 
 
 
 
 
 
Net income
$
0.04

 
$
1.11

 
$
10.56

 
$
0.29

 
 
 
 
 
 
 
 
Weighted average shares—basic
19,612

 
19,725

 
19,887

 
19,933

Weighted average shares—diluted
20,631

 
21,276

 
21,460

 
21,542

2014
 
 
 
 
 
 
 
Total revenues
$
15,958

 
$
10,608

 
$
14,973

 
$
22,999

Total operating costs and expenses
10,858

 
9,250

 
11,441

 
13,363

Income tax expense
(53
)
 
47

 
(124
)
 
(280
)
Income from continuing operations
2,097

 
1,288

 
777

 
6,730

Net loss attributable to noncontrolling interests
—

 
(304
)
 
(503
)
 
(325
)
Net income
2,097

 
1,592

 
1,280

 
7,055

Basic per share amounts:
 
 
 
 
 
 
 
     Net income
$
0.10

 
$
0.08

 
$
0.06

 
$
0.35

Diluted per share amounts:
 
 
 
 
 
 
 
     Net income
0.10

 
0.07

 
0.06

 
0.34

 
 
 
 
 
 
 
 
Weighted average shares—basic
20,601

 
20,738

 
20,417

 
19,878

Weighted average shares—diluted
21,208

 
21,780

 
21,345

 
20,792


(1) Restated to correct an error that was deemed immaterial to the financial statements taken as a whole: Deferred income taxes as of September 30, 2015 and income tax benefit for the three and nine months ended September 30, 2015 were restated to correct an immaterial error in the calculation of certain capital loss carry-forwards related to the sale of the Avinza product line.