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Organization and Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share for Out of Money Potential Common Shares (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stock Options With an Exercise Price of $3.59 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	7,521
Stock Options With an Exercise Price of $12.48 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	137,666	137,667
Stock Options With an Exercise Price of $12.84 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	4,167	4,167
Stock Options With an Exercise Price of $20.88 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded			4,313
Stock Options With an Exercise Price of $26.40 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	75,158	79,370	80,801
Stock Options With an Exercise Price of $32.76 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		53,706	53,706
Stock Options With an Exercise Price of $32.88 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded			52,820
Stock Options With an Exercise Price of $34.68 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	73,765	78,707	81,985
Stock Options With an Exercise Price of $39.00 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	8,333	8,333	8,333
Stock Options With an Exercise Price of $40.80 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded			8,333
Stock Options With an Exercise Price of $41.16 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	833	3,333	3,333
Stock Options With an Exercise Price of $42.00 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	8,333	8,333	8,333
Stock Options With an Exercise Price of $46.80 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	1,667	1,667	1,667
Stock Options With an Exercise Price of $3.52 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	120,000
Stock Options With an Exercise Price of $43.20 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		130,208	130,208
Options and Warrants Excluded from Diluted EPS [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	437,443	505,491	433,832

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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