Shareholders' Equity and Share-Based Compensation

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Shareholders' Equity and Share-Based Compensation

Share Repurchase Program and Treasury Shares

On September 30, 2015, the Board authorized a share repurchase program allowing repurchases of up to $50.0 million of HMEC's common stock, par value $0.001 (Program). The Program authorizes the repurchase of common shares in open market or privately negotiated transactions, from time to time, depending on market conditions. The Program does not have an expiration date and may be limited or terminated at any time without notice.

During 2018, the Company repurchased 129,112 shares of its common stock, or 0.3% of the shares outstanding as of December 31, 2017, at an aggregate cost of $5.1 million, or an average price of $39.41 per share. During 2019, the Company did not repurchase any shares of its common stock. During 2020, the Company repurchased 52,095 shares of its common stock, or 0.1% of the shares outstanding as of December 31, 2019, at an aggregate cost of $2.2 million, or an average price of $41.17 per share. In total and through December 31, 2020, 899,468 shares were repurchased under the Program at an average price of $32.68 per share. The repurchase of shares was funded through use of cash. As of December 31, 2020, $20.6 million remained authorized for future share repurchases under the Program.

At December 31, 2020, the Company held 24,902,579 shares in treasury.

Authorization of Preferred Stock

In 1996, the shareholders of HMEC approved authorization of 1,000,000 shares of 0.001 par value preferred stock. The Board is authorized to (1) direct the issuance of the preferred stock in one or more series, (2) fix the dividend rate, conversion or exchange rights, redemption price and liquidation preference, of any series of the preferred stock, (3) fix the number of shares for any series and (4) increase or decrease the number of shares of any series. No shares of preferred stock were issued or outstanding at December 31, 2020 and 2019.

2010 Comprehensive Executive Compensation Plan

In 2010, the shareholders of HMEC approved the 2010 Comprehensive Executive Compensation Plan (the Comprehensive Plan). The purpose of the Comprehensive Plan is to aid the Company in attracting, retaining, motivating and rewarding employees and non-employee Directors; to provide for equitable and competitive compensation opportunities, including deferral opportunities; to encourage long-term service; to recognize individual contributions and reward achievement of Company goals; and to promote the creation of long-term value for the Company's shareholders by closely aligning the interests of plan participants with those of shareholders. The Comprehensive Plan authorizes share-based and cash-based incentives for plan participants. In 2012, the shareholders of HMEC approved the implementation of a fungible share pool under which grants of full value shares will count against the share limit as two and one half shares for every share subject to a full value award. In 2015, the shareholders of HMEC approved an amendment and restatement of the

Comprehensive Plan which included an increase of 3,250,000 in the number of shares of common stock reserved for issuance under the Comprehensive Plan. As of December 31, 2020, approximately 751,661 shares were available for grant under the Comprehensive Plan. Shares of common stock issued under the Comprehensive Plan may be either authorized and unissued shares of HMEC or shares that have been reacquired by HMEC; however, new shares have been issued historically.

As further described in the paragraphs below, CSUs, stock options and RSUs under the Comprehensive Plan were as follows:

	December 31,
	2020	2019	2018
CSUs related to deferred compensation for Directors	23,609	28,526	32,288
CSUs related to deferred compensation for employees	20,467	25,194	24,498
Stock options	916,287	908,557	774,821
RSUs related to incentive compensation	823,393	889,438	1,008,249
Total	1,783,756	1,851,715	1,839,856

Director Common Stock Units

Deferred compensation for Directors is in the form of CSUs, which represent an equal number of common shares to be issued in the future. The outstanding units of Directors serving on the Board accrue dividends at the same rate as dividends paid to HMEC's shareholders. These dividends are reinvested into additional CSUs.

Employee Common Stock Units

Deferred compensation for employees is in the form of CSUs, which represent an equal number of common shares to be issued in the future. Distributions of employee deferred compensation are allowed to be either in common shares or cash. Through December 31, 2020, all distributions have been in cash. The outstanding units accrue dividends at the same rate as dividends paid to HMEC's shareholders. These dividends are reinvested into additional CSUs.

Stock Options

Options to purchase shares of HMEC common stock may be granted to executive officers, other employees and Directors. The options become exercisable in installments based on service generally beginning in the first year from the date of grant and generally become fully vested 4 years from the date of grant. The options generally expire 7 to 10 years from the date of grant. The exercise price of the option is equal to the market price of HMEC's common stock on the date of grant resulting in a grant date intrinsic value of $0.

Changes in outstanding options were as follows:

	Weighted Average Option Price per Share	Range of Option Prices per Share	Options
			Outstanding	Vested and Exercisable
December 31, 2019	$37.82	$20.60-$44.75	908,557	368,700
Granted	$41.83	$41.83-$41.83	234,248	—
Vested	$38.59	$28.88-$42.95	—	145,788
Exercised	$31.08	$20.60-$42.95	(77,291)	(77,291)
Forfeited	$40.64	$31.01-$42.95	(106,362)	—
Expired	$39.99	$20.60-$42.95	(42,865)	—
December 31, 2020	$38.99	$28.88-$42.95	916,287	437,197

Option information segregated by ranges of exercise prices were as follows:

	December 31, 2020
		Total Outstanding Options			Vested and Exercisable Options
	Range of Option Prices per Share	Options	Weighted Average Option Price per Share	Weighted Average Remaining Term	Options	Weighted Average Option Price per Share	Weighted Average Remaining Term
	$28.88-$33.41	203,207	$30.84	4.61	203,207	$30.84	4.61
	$36.04-$41.95	546,108	$40.81	8.05	154,902	$40.90	6.81
	$42.73-$42.95	166,972	$42.93	7.33	79,088	$42.94	7.26
Total		916,287	$38.99	7.15	437,197	$36.59	5.86

The weighted average exercise prices of vested and exercisable options as of December 31, 2019 and 2018 were $34.81 and $31.42, respectively.

As of December 31, 2020, based on a closing stock price of $42.04 per share, the aggregate intrinsic (in-the-money) values of vested options and all options outstanding were $2.5 million and $2.9 million, respectively.

Restricted Stock Units

RSUs may be granted to executive officers, other employees and Directors and represent an equal number of common shares to be issued in the future. The RSUs vest in installments based on service or attainment of performance criteria generally beginning in the first year from the date of grant and generally become fully vested 1 to 5 years from the date of grant. The outstanding units accrue dividends at the same rate as dividends paid to HMEC's shareholders. These dividends are reinvested into additional RSUs.

Changes in outstanding RSUs were as follows:

	Total Outstanding Units		Vested Units
	Units	Weighted Average Grant Date Fair Value per Unit	Units	Weighted Average Grant Date Fair Value per Unit
December 31, 2019	889,438	$31.94	543,794	$24.77
Granted (1)	197,207	$42.07	—	—
Adjustment for performance achievement	419	$46.32	—	—
Vested	—	—	143,836	$42.56
Forfeited	(61,025)	$43.60	—	—
Distributed (2)	(202,646)	$34.51	(202,646)	$34.51
December 31, 2020	823,393	$33.88	484,984	$27.48

(1)    Includes dividends reinvested into additional RSUs.

(2)    Includes distributed units which were utilized to satisfy withholding taxes due on the distribution.