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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity for fiscal years 2016, 2015 and 2014:

		Number of Common Shares								Weighted-
		Options								Average
		Outstanding				Exercisable				Exercise Price
Balance at December 31, 2015			2,419,529				724,529			$	8.16
Granted			1,494,475								12.03
Options Subject to Anti-Dilutive Adjustments			(2,337,643	)							8.75
Options Subject to Anti-Dilutive Adjustments			2,337,643								7.04
Exercised			(313,500	)							5.72
Cancelled			(198,023	)							8.10
Balance at December 31, 2016			3,402,481				411,029			$	9.02
Balance at December 28, 2014			755,617				616,792			$	6.09
Granted			1,695,000								9.07
Exercised			(25,088	)							9.62
Cancelled			(6,000	)							9.19
Balance at December 31, 2015			2,419,529				724,529			$	8.16
Balance at December 29, 2013			798,171				585,769			$	5.97
Forfeited/cancelled/expired			(25,211	)							5.19
Exercised			(28,343	)							4.73
Granted			11,000								9.18
Balance at December 28, 2014			755,617				616,792			$	6.09

Schedule of Assumptions Used to Estimate the Fair Value of Stock Options Granted

The following assumptions were used to estimate the fair value of stock options granted during fiscal years 2016, 2015 and 2014:

	2016				2015				2014
Expected dividend yield		—				—				—
Risk-free interest rate	1.43 – 2.40%				2.18 – 2.36%				2.39 – 2.88%
Expected term (in years)		10				10				10
Expected volatility	24.03 – 26.95%				27.24 – 27.60%				32.87 – 39.35%

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- References

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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